共 12 条
[2]
Blaauw A., 1961, BAN, V15, P265
[3]
BOYNTON PE, 1969, IAU2179 CIRC
[5]
Hills J G, 1970, Nature, V225, P840, DOI 10.1038/225840a0
[6]
Hills J. G., 1970, B AM ASTRON SOC, V2, P199
[7]
HILLS JG, 1969, THESIS U MICHIGAN
[8]
Petrie R. M., 1962, ASTRONOMICAL TECHNIQ